Finding the Fourth Proportional to 13,118.10, 19,686.03 and 5,718.27

Step by Step Solution

1. Step 1: Write the proportion equation
   13,118.10 : 19,686.03 = 5,718.27 : x
2. Step 2: Convert to fraction form
   13,118.10/19,686.03 = 5,718.27/x
3. Step 3: Cross multiply
   13,118.10x = 19,686.03 × 5,718.27
4. Step 4: Simplify right side
   13,118.10x = 112,570,034.77
5. Step 5: Solve for x
   x = 112,570,034.77/13,118.10
6. Step 6: Final answer
   x = 8,581.28